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SDR AALA202306133834

Open the Markdown

Service difficulty report · Drain Valve · Airbus A320*

FAA SDR system

Difficulty date
May 22, 2023
Submitted
June 13, 2023
Operation
Air carrier
Aircraft
N572UW
Make and model
Airbus A320*
Aircraft serial
5899
Aircraft time
30,426 hours, 12,065 cycles
System (JASC)
2910 · Hydraulic System, Main
Part
Drain Valve
Condition
Leaking
Location
Zone 100 - Fuse
Stage of operation
DE
How discovered
O
Nature of condition
B
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

AIRCRAFT WAS GROUNDED: STRONG DIRTY SOCK SMELL THROUGHOUT THE CABIN DURING DESCENT. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU. **SUPPLEMENTAL REPORT FOR AALA202305253834: MAINTENANCE FOUND THE APU INTAKE AND PLENUM HAD SIGNS OF CONTAMINATION. MAINTENANCE DETERMINED THAT THE SOURCE OF THE CONTAMINATION WAS THE YELLOW HYDRAULIC RESERVOIR DRAIN VALVE WHICH WAS LEAKING. MAINTENANCE REPLACED THE DRAIN VALVE PER AMM 29-13-41 AND ACCOMPLISHED AN ENHANCED DECONTAMINATION OF THE ENVIRONMENTAL CONTROL SYSTEM PER TASK CARD 26L00021014 **. (CLOSED)